Jacob covert



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IMPROVED BROPELLER.

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TO ALL WHOM IT MAY CONCERN:

Be it known that l', JACOB CovEpL ofv the city, county, and State of New York, have inventeda new and t improved4 Mode of Propelling Vessels; and I-do hereby declare the following to be a full, fclenr, and Vexact description thereof7 reference being hnd to the accompanying drawings, figures, and letters of reference thereon, making part of this specification. lOf' the said llrawingsi i i i Figure 1 is a side elevation. Figure 2 is u. top view. y Similar letters of reference indicate like partsin all the drawings.v f i My invention consists in the employment of n. series of vertical floats or blades, secura'to parallel bars by bolts ami connected to ctanksso that as the cranks revolve the 'blades or ilontsre immersed in the waterend the vessel propelled. 4 i i To enable oth'ers skilled in the 4art to inake and use my invention, Iwill describe the constrlictionnnd operation'thereo. y i i, l t

A represents the hull of a vessel. B, the propellers having floats, bb. C C are shafts, secured in-jonrnalbox`es ist e e, to one of which the motive power is to be connected by a crjunkior other suitable means. D is a t rod, which connects thc two shafts together by means of the larmsold and a connecting-pin.4 To the ends of the shafts C are cranks, c, which connect, bya. wrist-pin, a, with the parallel barsB, as plainly shown. To apply i my invention to a vessel I first determine ftbe lengths of` the crarks c, forthe dip cf theriloats or blades b b in" the water; I then loca-te tbe;journalbo`xes in the sides o'f the .'vessel to receive the shafts CC;V The -iloats or` blades b b are secured to the parallel bars'E bybolts or oth'er fastenings, and the 'propeller `may be covered by a cap, E, as shown in g. 2, t prevent the spray from wetting the vessel.` l L a The operation will be us follows: Motion Abeing given. tothe crank-shafts C C, will, as the shafts revolve, raise from and (lip thev propeller into the water, and as the loct's always retain their vertical position there is no lift of water7 and the speed of a vessel will be greatly accelerated. 'When the propellersvare capped small apertures may be' left uudertbe cover in the o'u'tside ba'r E for the air to pass `ont. f Having thus fully 'described myinvention,\what I clain1, is.' v y y A series of vertical oats or blades b b, secured to 'parallel sides E, and so arranged as Ato form-a series oli, water compartments in combination with the crank C C, substantially as described and specified. i l

Y JACOB COVERT.

Witnesses .Tmtanss Ro'rn, ELIZABETH VAN Hoax. 

